In order to prevent misuse of LoadRunner by outside sources, LoadRunner maintains a list of the functions that are allowed to be executed on a Load Generator for each supported protocol.

The lists are stored in files with the ".asl" extension under "<Load Generator install>\merc_asl\*.asl" where "*" signifies the relevant protocol. To add a new function to the lists of allowed functions for a Load Generator, add a new line to the relevant protocol list file containing the function name with an appended "=" character as follows:

<function_name>=

For general LoadRunner (lr) or C functions append the function with an equal sign on a new line to the end of the file "lrun_api.asl".

Example: To add a function called "fopen", add the following to the end of the file "lrun_api.asl":

fopen=

Note: Ensure that the relevant protocol ".asl" files are amended as required on all affected Load Generators.